Horgan writes about...
the bewilderment you feel when you unexpectedly come face to face with yourself. The loopy feedback-ness of the sensation amplifies it. Try to analyze it, put it into words, and you might take note of your bizarre hybrid nature. You are a physical thing in a world of physical things, including other people. You have height, width, heft, you are subject to gravity and other forces, and yet you are not just physical. Others can see your body, but they cannot see your mind.
Related to consciousness but distinct
